text: After a decade of analyzing about 30,000 fossil and amber-containing fossil specimens, researchers from Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences (NIGPAS) made an incredible discovery about ancient ecosystems in Zhangpu District, Fujian Province, southeast China?
classes:  No, the ancient ecosystem in Zhangpu County, Fujian Province, China has become a mystery full of surprises for researchers.  Also, the ancient ecosystem in Zhangpu County, Fujian Province, China has become a mystery full of surprises for researchers.  Yes, the ancient ecosystem in Zhangpu County, Fujian Province, China has become a mystery full of surprises for researchers.